1 |
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/* |
2 |
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* Written by Doug Lea with assistance from members of JCP JSR-166 |
3 |
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* Expert Group and released to the public domain, as explained at |
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* http://creativecommons.org/licenses/publicdomain |
4 |
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* http://creativecommons.org/publicdomain/zero/1.0/ |
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* Other contributors include Andrew Wright, Jeffrey Hayes, |
6 |
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* Pat Fisher, Mike Judd. |
7 |
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*/ |
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|
9 |
– |
import junit.framework.*; |
10 |
– |
import java.util.*; |
11 |
– |
import java.util.concurrent.*; |
9 |
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import static java.util.concurrent.TimeUnit.MILLISECONDS; |
10 |
< |
import java.io.*; |
10 |
> |
|
11 |
> |
import java.util.ArrayList; |
12 |
> |
import java.util.Arrays; |
13 |
> |
import java.util.Collection; |
14 |
> |
import java.util.Iterator; |
15 |
> |
import java.util.NoSuchElementException; |
16 |
> |
import java.util.Queue; |
17 |
> |
import java.util.concurrent.BlockingQueue; |
18 |
> |
import java.util.concurrent.CountDownLatch; |
19 |
> |
import java.util.concurrent.Executors; |
20 |
> |
import java.util.concurrent.ExecutorService; |
21 |
> |
import java.util.concurrent.LinkedBlockingQueue; |
22 |
> |
|
23 |
> |
import junit.framework.Test; |
24 |
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|
25 |
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public class LinkedBlockingQueueTest extends JSR166TestCase { |
26 |
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|
32 |
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|
33 |
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public static class Bounded extends BlockingQueueTest { |
34 |
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protected BlockingQueue emptyCollection() { |
35 |
< |
return new LinkedBlockingQueue(20); |
35 |
> |
return new LinkedBlockingQueue(SIZE); |
36 |
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} |
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} |
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|
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public static void main(String[] args) { |
40 |
< |
junit.textui.TestRunner.run(suite()); |
40 |
> |
main(suite(), args); |
41 |
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} |
42 |
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|
43 |
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public static Test suite() { |
44 |
+ |
class Implementation implements CollectionImplementation { |
45 |
+ |
public Class<?> klazz() { return LinkedBlockingQueue.class; } |
46 |
+ |
public Collection emptyCollection() { return new LinkedBlockingQueue(); } |
47 |
+ |
public Object makeElement(int i) { return i; } |
48 |
+ |
public boolean isConcurrent() { return true; } |
49 |
+ |
public boolean permitsNulls() { return false; } |
50 |
+ |
} |
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return newTestSuite(LinkedBlockingQueueTest.class, |
52 |
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new Unbounded().testSuite(), |
53 |
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new Bounded().testSuite()); |
53 |
> |
new Bounded().testSuite(), |
54 |
> |
CollectionTest.testSuite(new Implementation())); |
55 |
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} |
56 |
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|
39 |
– |
|
57 |
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/** |
58 |
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* Create a queue of given size containing consecutive |
59 |
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* Integers 0 ... n. |
58 |
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* Returns a new queue of given size containing consecutive |
59 |
> |
* Integers 0 ... n - 1. |
60 |
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*/ |
61 |
< |
private LinkedBlockingQueue populatedQueue(int n) { |
62 |
< |
LinkedBlockingQueue q = new LinkedBlockingQueue(n); |
61 |
> |
private static LinkedBlockingQueue<Integer> populatedQueue(int n) { |
62 |
> |
LinkedBlockingQueue<Integer> q = |
63 |
> |
new LinkedBlockingQueue<Integer>(n); |
64 |
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assertTrue(q.isEmpty()); |
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for (int i = 0; i < n; i++) |
66 |
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assertTrue(q.offer(new Integer(i))); |
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assertFalse(q.isEmpty()); |
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assertEquals(0, q.remainingCapacity()); |
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assertEquals(n, q.size()); |
70 |
+ |
assertEquals((Integer) 0, q.peek()); |
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return q; |
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} |
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|
81 |
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} |
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|
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/** |
84 |
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* Constructor throws IAE if capacity argument nonpositive |
84 |
> |
* Constructor throws IllegalArgumentException if capacity argument nonpositive |
85 |
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*/ |
86 |
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public void testConstructor2() { |
87 |
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try { |
88 |
< |
LinkedBlockingQueue q = new LinkedBlockingQueue(0); |
88 |
> |
new LinkedBlockingQueue(0); |
89 |
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shouldThrow(); |
90 |
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} catch (IllegalArgumentException success) {} |
91 |
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} |
92 |
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|
93 |
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/** |
94 |
< |
* Initializing from null Collection throws NPE |
94 |
> |
* Initializing from null Collection throws NullPointerException |
95 |
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*/ |
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public void testConstructor3() { |
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try { |
98 |
< |
LinkedBlockingQueue q = new LinkedBlockingQueue(null); |
98 |
> |
new LinkedBlockingQueue(null); |
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shouldThrow(); |
100 |
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} catch (NullPointerException success) {} |
101 |
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} |
102 |
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|
103 |
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/** |
104 |
< |
* Initializing from Collection of null elements throws NPE |
104 |
> |
* Initializing from Collection of null elements throws NullPointerException |
105 |
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*/ |
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public void testConstructor4() { |
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+ |
Collection<Integer> elements = Arrays.asList(new Integer[SIZE]); |
108 |
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try { |
109 |
< |
Integer[] ints = new Integer[SIZE]; |
90 |
< |
LinkedBlockingQueue q = new LinkedBlockingQueue(Arrays.asList(ints)); |
109 |
> |
new LinkedBlockingQueue(elements); |
110 |
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shouldThrow(); |
111 |
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} catch (NullPointerException success) {} |
112 |
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} |
113 |
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|
114 |
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/** |
115 |
< |
* Initializing from Collection with some null elements throws NPE |
115 |
> |
* Initializing from Collection with some null elements throws |
116 |
> |
* NullPointerException |
117 |
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*/ |
118 |
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public void testConstructor5() { |
119 |
+ |
Integer[] ints = new Integer[SIZE]; |
120 |
+ |
for (int i = 0; i < SIZE - 1; ++i) |
121 |
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ints[i] = new Integer(i); |
122 |
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Collection<Integer> elements = Arrays.asList(ints); |
123 |
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try { |
124 |
< |
Integer[] ints = new Integer[SIZE]; |
101 |
< |
for (int i = 0; i < SIZE-1; ++i) |
102 |
< |
ints[i] = new Integer(i); |
103 |
< |
LinkedBlockingQueue q = new LinkedBlockingQueue(Arrays.asList(ints)); |
124 |
> |
new LinkedBlockingQueue(elements); |
125 |
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shouldThrow(); |
126 |
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} catch (NullPointerException success) {} |
127 |
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} |
157 |
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* remainingCapacity decreases on add, increases on remove |
158 |
|
*/ |
159 |
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public void testRemainingCapacity() { |
160 |
< |
LinkedBlockingQueue q = populatedQueue(SIZE); |
160 |
> |
BlockingQueue q = populatedQueue(SIZE); |
161 |
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for (int i = 0; i < SIZE; ++i) { |
162 |
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assertEquals(i, q.remainingCapacity()); |
163 |
< |
assertEquals(SIZE-i, q.size()); |
164 |
< |
q.remove(); |
163 |
> |
assertEquals(SIZE, q.size() + q.remainingCapacity()); |
164 |
> |
assertEquals(i, q.remove()); |
165 |
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} |
166 |
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for (int i = 0; i < SIZE; ++i) { |
167 |
< |
assertEquals(SIZE-i, q.remainingCapacity()); |
168 |
< |
assertEquals(i, q.size()); |
169 |
< |
q.add(new Integer(i)); |
167 |
> |
assertEquals(SIZE - i, q.remainingCapacity()); |
168 |
> |
assertEquals(SIZE, q.size() + q.remainingCapacity()); |
169 |
> |
assertTrue(q.add(i)); |
170 |
|
} |
171 |
|
} |
172 |
|
|
173 |
|
/** |
153 |
– |
* offer(null) throws NPE |
154 |
– |
*/ |
155 |
– |
public void testOfferNull() { |
156 |
– |
try { |
157 |
– |
LinkedBlockingQueue q = new LinkedBlockingQueue(1); |
158 |
– |
q.offer(null); |
159 |
– |
shouldThrow(); |
160 |
– |
} catch (NullPointerException success) {} |
161 |
– |
} |
162 |
– |
|
163 |
– |
/** |
164 |
– |
* add(null) throws NPE |
165 |
– |
*/ |
166 |
– |
public void testAddNull() { |
167 |
– |
try { |
168 |
– |
LinkedBlockingQueue q = new LinkedBlockingQueue(1); |
169 |
– |
q.add(null); |
170 |
– |
shouldThrow(); |
171 |
– |
} catch (NullPointerException success) {} |
172 |
– |
} |
173 |
– |
|
174 |
– |
/** |
174 |
|
* Offer succeeds if not full; fails if full |
175 |
|
*/ |
176 |
|
public void testOffer() { |
180 |
|
} |
181 |
|
|
182 |
|
/** |
183 |
< |
* add succeeds if not full; throws ISE if full |
183 |
> |
* add succeeds if not full; throws IllegalStateException if full |
184 |
|
*/ |
185 |
|
public void testAdd() { |
186 |
+ |
LinkedBlockingQueue q = new LinkedBlockingQueue(SIZE); |
187 |
+ |
for (int i = 0; i < SIZE; ++i) |
188 |
+ |
assertTrue(q.add(new Integer(i))); |
189 |
+ |
assertEquals(0, q.remainingCapacity()); |
190 |
|
try { |
188 |
– |
LinkedBlockingQueue q = new LinkedBlockingQueue(SIZE); |
189 |
– |
for (int i = 0; i < SIZE; ++i) { |
190 |
– |
assertTrue(q.add(new Integer(i))); |
191 |
– |
} |
192 |
– |
assertEquals(0, q.remainingCapacity()); |
191 |
|
q.add(new Integer(SIZE)); |
192 |
|
shouldThrow(); |
193 |
|
} catch (IllegalStateException success) {} |
194 |
|
} |
195 |
|
|
196 |
|
/** |
197 |
< |
* addAll(null) throws NPE |
200 |
< |
*/ |
201 |
< |
public void testAddAll1() { |
202 |
< |
try { |
203 |
< |
LinkedBlockingQueue q = new LinkedBlockingQueue(1); |
204 |
< |
q.addAll(null); |
205 |
< |
shouldThrow(); |
206 |
< |
} catch (NullPointerException success) {} |
207 |
< |
} |
208 |
< |
|
209 |
< |
/** |
210 |
< |
* addAll(this) throws IAE |
197 |
> |
* addAll(this) throws IllegalArgumentException |
198 |
|
*/ |
199 |
|
public void testAddAllSelf() { |
200 |
+ |
LinkedBlockingQueue q = populatedQueue(SIZE); |
201 |
|
try { |
214 |
– |
LinkedBlockingQueue q = populatedQueue(SIZE); |
202 |
|
q.addAll(q); |
203 |
|
shouldThrow(); |
204 |
|
} catch (IllegalArgumentException success) {} |
205 |
|
} |
206 |
|
|
207 |
|
/** |
221 |
– |
* addAll of a collection with null elements throws NPE |
222 |
– |
*/ |
223 |
– |
public void testAddAll2() { |
224 |
– |
try { |
225 |
– |
LinkedBlockingQueue q = new LinkedBlockingQueue(SIZE); |
226 |
– |
Integer[] ints = new Integer[SIZE]; |
227 |
– |
q.addAll(Arrays.asList(ints)); |
228 |
– |
shouldThrow(); |
229 |
– |
} catch (NullPointerException success) {} |
230 |
– |
} |
231 |
– |
|
232 |
– |
/** |
208 |
|
* addAll of a collection with any null elements throws NPE after |
209 |
|
* possibly adding some elements |
210 |
|
*/ |
211 |
|
public void testAddAll3() { |
212 |
+ |
LinkedBlockingQueue q = new LinkedBlockingQueue(SIZE); |
213 |
+ |
Integer[] ints = new Integer[SIZE]; |
214 |
+ |
for (int i = 0; i < SIZE - 1; ++i) |
215 |
+ |
ints[i] = new Integer(i); |
216 |
+ |
Collection<Integer> elements = Arrays.asList(ints); |
217 |
|
try { |
218 |
< |
LinkedBlockingQueue q = new LinkedBlockingQueue(SIZE); |
239 |
< |
Integer[] ints = new Integer[SIZE]; |
240 |
< |
for (int i = 0; i < SIZE-1; ++i) |
241 |
< |
ints[i] = new Integer(i); |
242 |
< |
q.addAll(Arrays.asList(ints)); |
218 |
> |
q.addAll(elements); |
219 |
|
shouldThrow(); |
220 |
|
} catch (NullPointerException success) {} |
221 |
|
} |
222 |
|
|
223 |
|
/** |
224 |
< |
* addAll throws ISE if not enough room |
224 |
> |
* addAll throws IllegalStateException if not enough room |
225 |
|
*/ |
226 |
|
public void testAddAll4() { |
227 |
+ |
LinkedBlockingQueue q = new LinkedBlockingQueue(SIZE - 1); |
228 |
+ |
Integer[] ints = new Integer[SIZE]; |
229 |
+ |
for (int i = 0; i < SIZE; ++i) |
230 |
+ |
ints[i] = new Integer(i); |
231 |
+ |
Collection<Integer> elements = Arrays.asList(ints); |
232 |
|
try { |
233 |
< |
LinkedBlockingQueue q = new LinkedBlockingQueue(1); |
253 |
< |
Integer[] ints = new Integer[SIZE]; |
254 |
< |
for (int i = 0; i < SIZE; ++i) |
255 |
< |
ints[i] = new Integer(i); |
256 |
< |
q.addAll(Arrays.asList(ints)); |
233 |
> |
q.addAll(elements); |
234 |
|
shouldThrow(); |
235 |
|
} catch (IllegalStateException success) {} |
236 |
|
} |
251 |
|
} |
252 |
|
|
253 |
|
/** |
277 |
– |
* put(null) throws NPE |
278 |
– |
*/ |
279 |
– |
public void testPutNull() throws InterruptedException { |
280 |
– |
try { |
281 |
– |
LinkedBlockingQueue q = new LinkedBlockingQueue(SIZE); |
282 |
– |
q.put(null); |
283 |
– |
shouldThrow(); |
284 |
– |
} catch (NullPointerException success) {} |
285 |
– |
} |
286 |
– |
|
287 |
– |
/** |
254 |
|
* all elements successfully put are contained |
255 |
|
*/ |
256 |
|
public void testPut() throws InterruptedException { |
257 |
|
LinkedBlockingQueue q = new LinkedBlockingQueue(SIZE); |
258 |
|
for (int i = 0; i < SIZE; ++i) { |
259 |
< |
Integer I = new Integer(i); |
260 |
< |
q.put(I); |
261 |
< |
assertTrue(q.contains(I)); |
259 |
> |
Integer x = new Integer(i); |
260 |
> |
q.put(x); |
261 |
> |
assertTrue(q.contains(x)); |
262 |
|
} |
263 |
|
assertEquals(0, q.remainingCapacity()); |
264 |
|
} |
268 |
|
*/ |
269 |
|
public void testBlockingPut() throws InterruptedException { |
270 |
|
final LinkedBlockingQueue q = new LinkedBlockingQueue(SIZE); |
271 |
< |
Thread t = new Thread(new CheckedRunnable() { |
271 |
> |
final CountDownLatch pleaseInterrupt = new CountDownLatch(1); |
272 |
> |
Thread t = newStartedThread(new CheckedRunnable() { |
273 |
|
public void realRun() throws InterruptedException { |
274 |
|
for (int i = 0; i < SIZE; ++i) |
275 |
|
q.put(i); |
276 |
|
assertEquals(SIZE, q.size()); |
277 |
|
assertEquals(0, q.remainingCapacity()); |
278 |
+ |
|
279 |
+ |
Thread.currentThread().interrupt(); |
280 |
|
try { |
281 |
|
q.put(99); |
282 |
|
shouldThrow(); |
283 |
|
} catch (InterruptedException success) {} |
284 |
+ |
assertFalse(Thread.interrupted()); |
285 |
+ |
|
286 |
+ |
pleaseInterrupt.countDown(); |
287 |
+ |
try { |
288 |
+ |
q.put(99); |
289 |
+ |
shouldThrow(); |
290 |
+ |
} catch (InterruptedException success) {} |
291 |
+ |
assertFalse(Thread.interrupted()); |
292 |
|
}}); |
293 |
|
|
294 |
< |
t.start(); |
295 |
< |
Thread.sleep(SHORT_DELAY_MS); |
294 |
> |
await(pleaseInterrupt); |
295 |
> |
assertThreadBlocks(t, Thread.State.WAITING); |
296 |
|
t.interrupt(); |
297 |
< |
t.join(); |
297 |
> |
awaitTermination(t); |
298 |
|
assertEquals(SIZE, q.size()); |
299 |
|
assertEquals(0, q.remainingCapacity()); |
300 |
|
} |
301 |
|
|
302 |
|
/** |
303 |
< |
* put blocks waiting for take when full |
303 |
> |
* put blocks interruptibly waiting for take when full |
304 |
|
*/ |
305 |
|
public void testPutWithTake() throws InterruptedException { |
306 |
|
final int capacity = 2; |
307 |
|
final LinkedBlockingQueue q = new LinkedBlockingQueue(2); |
308 |
< |
Thread t = new Thread(new CheckedRunnable() { |
308 |
> |
final CountDownLatch pleaseTake = new CountDownLatch(1); |
309 |
> |
final CountDownLatch pleaseInterrupt = new CountDownLatch(1); |
310 |
> |
Thread t = newStartedThread(new CheckedRunnable() { |
311 |
|
public void realRun() throws InterruptedException { |
312 |
< |
for (int i = 0; i < capacity + 1; i++) |
312 |
> |
for (int i = 0; i < capacity; i++) |
313 |
|
q.put(i); |
314 |
+ |
pleaseTake.countDown(); |
315 |
+ |
q.put(86); |
316 |
+ |
|
317 |
+ |
Thread.currentThread().interrupt(); |
318 |
+ |
try { |
319 |
+ |
q.put(99); |
320 |
+ |
shouldThrow(); |
321 |
+ |
} catch (InterruptedException success) {} |
322 |
+ |
assertFalse(Thread.interrupted()); |
323 |
+ |
|
324 |
+ |
pleaseInterrupt.countDown(); |
325 |
|
try { |
326 |
|
q.put(99); |
327 |
|
shouldThrow(); |
328 |
|
} catch (InterruptedException success) {} |
329 |
+ |
assertFalse(Thread.interrupted()); |
330 |
|
}}); |
331 |
|
|
332 |
< |
t.start(); |
333 |
< |
Thread.sleep(SHORT_DELAY_MS); |
343 |
< |
assertEquals(q.remainingCapacity(), 0); |
332 |
> |
await(pleaseTake); |
333 |
> |
assertEquals(0, q.remainingCapacity()); |
334 |
|
assertEquals(0, q.take()); |
335 |
< |
Thread.sleep(SHORT_DELAY_MS); |
335 |
> |
|
336 |
> |
await(pleaseInterrupt); |
337 |
> |
assertThreadBlocks(t, Thread.State.WAITING); |
338 |
|
t.interrupt(); |
339 |
< |
t.join(); |
340 |
< |
assertEquals(q.remainingCapacity(), 0); |
339 |
> |
awaitTermination(t); |
340 |
> |
assertEquals(0, q.remainingCapacity()); |
341 |
|
} |
342 |
|
|
343 |
|
/** |
344 |
|
* timed offer times out if full and elements not taken |
345 |
|
*/ |
346 |
< |
public void testTimedOffer() throws InterruptedException { |
346 |
> |
public void testTimedOffer() { |
347 |
|
final LinkedBlockingQueue q = new LinkedBlockingQueue(2); |
348 |
< |
Thread t = new Thread(new CheckedRunnable() { |
348 |
> |
final CountDownLatch pleaseInterrupt = new CountDownLatch(1); |
349 |
> |
Thread t = newStartedThread(new CheckedRunnable() { |
350 |
|
public void realRun() throws InterruptedException { |
351 |
|
q.put(new Object()); |
352 |
|
q.put(new Object()); |
353 |
< |
assertFalse(q.offer(new Object(), SHORT_DELAY_MS, MILLISECONDS)); |
353 |
> |
long startTime = System.nanoTime(); |
354 |
> |
assertFalse(q.offer(new Object(), timeoutMillis(), MILLISECONDS)); |
355 |
> |
assertTrue(millisElapsedSince(startTime) >= timeoutMillis()); |
356 |
> |
pleaseInterrupt.countDown(); |
357 |
|
try { |
358 |
< |
q.offer(new Object(), LONG_DELAY_MS, MILLISECONDS); |
358 |
> |
q.offer(new Object(), 2 * LONG_DELAY_MS, MILLISECONDS); |
359 |
|
shouldThrow(); |
360 |
|
} catch (InterruptedException success) {} |
361 |
+ |
assertFalse(Thread.interrupted()); |
362 |
|
}}); |
363 |
|
|
364 |
< |
t.start(); |
365 |
< |
Thread.sleep(SMALL_DELAY_MS); |
364 |
> |
await(pleaseInterrupt); |
365 |
> |
assertThreadBlocks(t, Thread.State.TIMED_WAITING); |
366 |
|
t.interrupt(); |
367 |
< |
t.join(); |
367 |
> |
awaitTermination(t); |
368 |
|
} |
369 |
|
|
370 |
|
/** |
381 |
|
* Take removes existing elements until empty, then blocks interruptibly |
382 |
|
*/ |
383 |
|
public void testBlockingTake() throws InterruptedException { |
384 |
< |
final LinkedBlockingQueue q = populatedQueue(SIZE); |
385 |
< |
Thread t = new Thread(new CheckedRunnable() { |
384 |
> |
final BlockingQueue q = populatedQueue(SIZE); |
385 |
> |
final CountDownLatch pleaseInterrupt = new CountDownLatch(1); |
386 |
> |
Thread t = newStartedThread(new CheckedRunnable() { |
387 |
|
public void realRun() throws InterruptedException { |
388 |
< |
for (int i = 0; i < SIZE; ++i) { |
389 |
< |
assertEquals(i, q.take()); |
390 |
< |
} |
388 |
> |
for (int i = 0; i < SIZE; i++) assertEquals(i, q.take()); |
389 |
> |
|
390 |
> |
Thread.currentThread().interrupt(); |
391 |
|
try { |
392 |
|
q.take(); |
393 |
|
shouldThrow(); |
394 |
|
} catch (InterruptedException success) {} |
395 |
+ |
assertFalse(Thread.interrupted()); |
396 |
+ |
|
397 |
+ |
pleaseInterrupt.countDown(); |
398 |
+ |
try { |
399 |
+ |
q.take(); |
400 |
+ |
shouldThrow(); |
401 |
+ |
} catch (InterruptedException success) {} |
402 |
+ |
assertFalse(Thread.interrupted()); |
403 |
|
}}); |
404 |
|
|
405 |
< |
t.start(); |
406 |
< |
Thread.sleep(SHORT_DELAY_MS); |
405 |
> |
await(pleaseInterrupt); |
406 |
> |
assertThreadBlocks(t, Thread.State.WAITING); |
407 |
|
t.interrupt(); |
408 |
< |
t.join(); |
408 |
> |
awaitTermination(t); |
409 |
|
} |
410 |
|
|
411 |
|
/** |
434 |
|
* timed poll with nonzero timeout succeeds when non-empty, else times out |
435 |
|
*/ |
436 |
|
public void testTimedPoll() throws InterruptedException { |
437 |
< |
LinkedBlockingQueue q = populatedQueue(SIZE); |
437 |
> |
LinkedBlockingQueue<Integer> q = populatedQueue(SIZE); |
438 |
|
for (int i = 0; i < SIZE; ++i) { |
439 |
< |
assertEquals(i, q.poll(SHORT_DELAY_MS, MILLISECONDS)); |
440 |
< |
} |
441 |
< |
assertNull(q.poll(SHORT_DELAY_MS, MILLISECONDS)); |
439 |
> |
long startTime = System.nanoTime(); |
440 |
> |
assertEquals(i, (int) q.poll(LONG_DELAY_MS, MILLISECONDS)); |
441 |
> |
assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS); |
442 |
> |
} |
443 |
> |
long startTime = System.nanoTime(); |
444 |
> |
assertNull(q.poll(timeoutMillis(), MILLISECONDS)); |
445 |
> |
assertTrue(millisElapsedSince(startTime) >= timeoutMillis()); |
446 |
> |
checkEmpty(q); |
447 |
|
} |
448 |
|
|
449 |
|
/** |
451 |
|
* returning timeout status |
452 |
|
*/ |
453 |
|
public void testInterruptedTimedPoll() throws InterruptedException { |
454 |
< |
Thread t = new Thread(new CheckedRunnable() { |
454 |
> |
final BlockingQueue<Integer> q = populatedQueue(SIZE); |
455 |
> |
final CountDownLatch pleaseInterrupt = new CountDownLatch(1); |
456 |
> |
Thread t = newStartedThread(new CheckedRunnable() { |
457 |
|
public void realRun() throws InterruptedException { |
458 |
< |
LinkedBlockingQueue q = populatedQueue(SIZE); |
459 |
< |
for (int i = 0; i < SIZE; ++i) { |
460 |
< |
assertEquals(i, q.poll(SHORT_DELAY_MS, MILLISECONDS)); |
461 |
< |
} |
458 |
> |
long startTime = System.nanoTime(); |
459 |
> |
for (int i = 0; i < SIZE; i++) |
460 |
> |
assertEquals(i, (int) q.poll(LONG_DELAY_MS, MILLISECONDS)); |
461 |
> |
|
462 |
> |
Thread.currentThread().interrupt(); |
463 |
|
try { |
464 |
< |
q.poll(SMALL_DELAY_MS, MILLISECONDS); |
464 |
> |
q.poll(LONG_DELAY_MS, MILLISECONDS); |
465 |
|
shouldThrow(); |
466 |
|
} catch (InterruptedException success) {} |
467 |
+ |
assertFalse(Thread.interrupted()); |
468 |
+ |
|
469 |
+ |
pleaseInterrupt.countDown(); |
470 |
+ |
try { |
471 |
+ |
q.poll(LONG_DELAY_MS, MILLISECONDS); |
472 |
+ |
shouldThrow(); |
473 |
+ |
} catch (InterruptedException success) {} |
474 |
+ |
assertFalse(Thread.interrupted()); |
475 |
+ |
|
476 |
+ |
assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS); |
477 |
|
}}); |
478 |
|
|
479 |
< |
t.start(); |
480 |
< |
Thread.sleep(SHORT_DELAY_MS); |
479 |
> |
await(pleaseInterrupt); |
480 |
> |
assertThreadBlocks(t, Thread.State.TIMED_WAITING); |
481 |
|
t.interrupt(); |
482 |
< |
t.join(); |
482 |
> |
awaitTermination(t); |
483 |
> |
checkEmpty(q); |
484 |
|
} |
485 |
|
|
486 |
|
/** |
527 |
|
} |
528 |
|
|
529 |
|
/** |
505 |
– |
* remove(x) removes x and returns true if present |
506 |
– |
*/ |
507 |
– |
public void testRemoveElement() { |
508 |
– |
LinkedBlockingQueue q = populatedQueue(SIZE); |
509 |
– |
for (int i = 1; i < SIZE; i+=2) { |
510 |
– |
assertTrue(q.remove(new Integer(i))); |
511 |
– |
} |
512 |
– |
for (int i = 0; i < SIZE; i+=2) { |
513 |
– |
assertTrue(q.remove(new Integer(i))); |
514 |
– |
assertFalse(q.remove(new Integer(i+1))); |
515 |
– |
} |
516 |
– |
assertTrue(q.isEmpty()); |
517 |
– |
} |
518 |
– |
|
519 |
– |
/** |
530 |
|
* An add following remove(x) succeeds |
531 |
|
*/ |
532 |
|
public void testRemoveElementAndAdd() throws InterruptedException { |
536 |
|
assertTrue(q.remove(new Integer(1))); |
537 |
|
assertTrue(q.remove(new Integer(2))); |
538 |
|
assertTrue(q.add(new Integer(3))); |
539 |
< |
assertTrue(q.take() != null); |
539 |
> |
assertNotNull(q.take()); |
540 |
|
} |
541 |
|
|
542 |
|
/** |
595 |
|
assertTrue(changed); |
596 |
|
|
597 |
|
assertTrue(q.containsAll(p)); |
598 |
< |
assertEquals(SIZE-i, q.size()); |
598 |
> |
assertEquals(SIZE - i, q.size()); |
599 |
|
p.remove(); |
600 |
|
} |
601 |
|
} |
608 |
|
LinkedBlockingQueue q = populatedQueue(SIZE); |
609 |
|
LinkedBlockingQueue p = populatedQueue(i); |
610 |
|
assertTrue(q.removeAll(p)); |
611 |
< |
assertEquals(SIZE-i, q.size()); |
611 |
> |
assertEquals(SIZE - i, q.size()); |
612 |
|
for (int j = 0; j < i; ++j) { |
613 |
< |
Integer I = (Integer)(p.remove()); |
614 |
< |
assertFalse(q.contains(I)); |
613 |
> |
Integer x = (Integer)(p.remove()); |
614 |
> |
assertFalse(q.contains(x)); |
615 |
|
} |
616 |
|
} |
617 |
|
} |
618 |
|
|
619 |
|
/** |
620 |
< |
* toArray contains all elements |
620 |
> |
* toArray contains all elements in FIFO order |
621 |
|
*/ |
622 |
< |
public void testToArray() throws InterruptedException { |
622 |
> |
public void testToArray() { |
623 |
|
LinkedBlockingQueue q = populatedQueue(SIZE); |
624 |
|
Object[] o = q.toArray(); |
625 |
|
for (int i = 0; i < o.length; i++) |
626 |
< |
assertEquals(o[i], q.take()); |
626 |
> |
assertSame(o[i], q.poll()); |
627 |
|
} |
628 |
|
|
629 |
|
/** |
630 |
< |
* toArray(a) contains all elements |
630 |
> |
* toArray(a) contains all elements in FIFO order |
631 |
|
*/ |
632 |
|
public void testToArray2() throws InterruptedException { |
633 |
< |
LinkedBlockingQueue q = populatedQueue(SIZE); |
633 |
> |
LinkedBlockingQueue<Integer> q = populatedQueue(SIZE); |
634 |
|
Integer[] ints = new Integer[SIZE]; |
635 |
< |
ints = (Integer[])q.toArray(ints); |
635 |
> |
Integer[] array = q.toArray(ints); |
636 |
> |
assertSame(ints, array); |
637 |
|
for (int i = 0; i < ints.length; i++) |
638 |
< |
assertEquals(ints[i], q.take()); |
628 |
< |
} |
629 |
< |
|
630 |
< |
/** |
631 |
< |
* toArray(null) throws NullPointerException |
632 |
< |
*/ |
633 |
< |
public void testToArray_NullArg() { |
634 |
< |
LinkedBlockingQueue q = populatedQueue(SIZE); |
635 |
< |
try { |
636 |
< |
q.toArray(null); |
637 |
< |
shouldThrow(); |
638 |
< |
} catch (NullPointerException success) {} |
638 |
> |
assertSame(ints[i], q.poll()); |
639 |
|
} |
640 |
|
|
641 |
|
/** |
649 |
|
} catch (ArrayStoreException success) {} |
650 |
|
} |
651 |
|
|
652 |
– |
|
652 |
|
/** |
653 |
|
* iterator iterates through all elements |
654 |
|
*/ |
655 |
|
public void testIterator() throws InterruptedException { |
656 |
|
LinkedBlockingQueue q = populatedQueue(SIZE); |
657 |
|
Iterator it = q.iterator(); |
658 |
< |
while (it.hasNext()) { |
658 |
> |
int i; |
659 |
> |
for (i = 0; it.hasNext(); i++) |
660 |
> |
assertTrue(q.contains(it.next())); |
661 |
> |
assertEquals(i, SIZE); |
662 |
> |
assertIteratorExhausted(it); |
663 |
> |
|
664 |
> |
it = q.iterator(); |
665 |
> |
for (i = 0; it.hasNext(); i++) |
666 |
|
assertEquals(it.next(), q.take()); |
667 |
< |
} |
667 |
> |
assertEquals(i, SIZE); |
668 |
> |
assertIteratorExhausted(it); |
669 |
> |
} |
670 |
> |
|
671 |
> |
/** |
672 |
> |
* iterator of empty collection has no elements |
673 |
> |
*/ |
674 |
> |
public void testEmptyIterator() { |
675 |
> |
assertIteratorExhausted(new LinkedBlockingQueue().iterator()); |
676 |
|
} |
677 |
|
|
678 |
|
/** |
694 |
|
assertFalse(it.hasNext()); |
695 |
|
} |
696 |
|
|
683 |
– |
|
697 |
|
/** |
698 |
|
* iterator ordering is FIFO |
699 |
|
*/ |
725 |
|
assertEquals(0, q.size()); |
726 |
|
} |
727 |
|
|
715 |
– |
|
728 |
|
/** |
729 |
|
* toString contains toStrings of elements |
730 |
|
*/ |
732 |
|
LinkedBlockingQueue q = populatedQueue(SIZE); |
733 |
|
String s = q.toString(); |
734 |
|
for (int i = 0; i < SIZE; ++i) { |
735 |
< |
assertTrue(s.indexOf(String.valueOf(i)) >= 0); |
735 |
> |
assertTrue(s.contains(String.valueOf(i))); |
736 |
|
} |
737 |
|
} |
738 |
|
|
727 |
– |
|
739 |
|
/** |
740 |
|
* offer transfers elements across Executor tasks |
741 |
|
*/ |
743 |
|
final LinkedBlockingQueue q = new LinkedBlockingQueue(2); |
744 |
|
q.add(one); |
745 |
|
q.add(two); |
746 |
< |
ExecutorService executor = Executors.newFixedThreadPool(2); |
747 |
< |
executor.execute(new CheckedRunnable() { |
748 |
< |
public void realRun() throws InterruptedException { |
749 |
< |
assertFalse(q.offer(three)); |
750 |
< |
assertTrue(q.offer(three, MEDIUM_DELAY_MS, MILLISECONDS)); |
751 |
< |
assertEquals(0, q.remainingCapacity()); |
752 |
< |
}}); |
753 |
< |
|
754 |
< |
executor.execute(new CheckedRunnable() { |
755 |
< |
public void realRun() throws InterruptedException { |
756 |
< |
Thread.sleep(SMALL_DELAY_MS); |
757 |
< |
assertSame(one, q.take()); |
758 |
< |
}}); |
759 |
< |
|
760 |
< |
joinPool(executor); |
746 |
> |
final CheckedBarrier threadsStarted = new CheckedBarrier(2); |
747 |
> |
final ExecutorService executor = Executors.newFixedThreadPool(2); |
748 |
> |
try (PoolCleaner cleaner = cleaner(executor)) { |
749 |
> |
executor.execute(new CheckedRunnable() { |
750 |
> |
public void realRun() throws InterruptedException { |
751 |
> |
assertFalse(q.offer(three)); |
752 |
> |
threadsStarted.await(); |
753 |
> |
assertTrue(q.offer(three, LONG_DELAY_MS, MILLISECONDS)); |
754 |
> |
assertEquals(0, q.remainingCapacity()); |
755 |
> |
}}); |
756 |
> |
|
757 |
> |
executor.execute(new CheckedRunnable() { |
758 |
> |
public void realRun() throws InterruptedException { |
759 |
> |
threadsStarted.await(); |
760 |
> |
assertSame(one, q.take()); |
761 |
> |
}}); |
762 |
> |
} |
763 |
|
} |
764 |
|
|
765 |
|
/** |
766 |
< |
* poll retrieves elements across Executor threads |
766 |
> |
* timed poll retrieves elements across Executor threads |
767 |
|
*/ |
768 |
|
public void testPollInExecutor() { |
769 |
|
final LinkedBlockingQueue q = new LinkedBlockingQueue(2); |
770 |
< |
ExecutorService executor = Executors.newFixedThreadPool(2); |
771 |
< |
executor.execute(new CheckedRunnable() { |
772 |
< |
public void realRun() throws InterruptedException { |
773 |
< |
assertNull(q.poll()); |
774 |
< |
assertSame(one, q.poll(MEDIUM_DELAY_MS, MILLISECONDS)); |
775 |
< |
assertTrue(q.isEmpty()); |
776 |
< |
}}); |
777 |
< |
|
778 |
< |
executor.execute(new CheckedRunnable() { |
779 |
< |
public void realRun() throws InterruptedException { |
780 |
< |
Thread.sleep(SMALL_DELAY_MS); |
781 |
< |
q.put(one); |
782 |
< |
}}); |
783 |
< |
|
784 |
< |
joinPool(executor); |
770 |
> |
final CheckedBarrier threadsStarted = new CheckedBarrier(2); |
771 |
> |
final ExecutorService executor = Executors.newFixedThreadPool(2); |
772 |
> |
try (PoolCleaner cleaner = cleaner(executor)) { |
773 |
> |
executor.execute(new CheckedRunnable() { |
774 |
> |
public void realRun() throws InterruptedException { |
775 |
> |
assertNull(q.poll()); |
776 |
> |
threadsStarted.await(); |
777 |
> |
assertSame(one, q.poll(LONG_DELAY_MS, MILLISECONDS)); |
778 |
> |
checkEmpty(q); |
779 |
> |
}}); |
780 |
> |
|
781 |
> |
executor.execute(new CheckedRunnable() { |
782 |
> |
public void realRun() throws InterruptedException { |
783 |
> |
threadsStarted.await(); |
784 |
> |
q.put(one); |
785 |
> |
}}); |
786 |
> |
} |
787 |
|
} |
788 |
|
|
789 |
|
/** |
790 |
|
* A deserialized serialized queue has same elements in same order |
791 |
|
*/ |
792 |
|
public void testSerialization() throws Exception { |
793 |
< |
LinkedBlockingQueue q = populatedQueue(SIZE); |
794 |
< |
|
780 |
< |
ByteArrayOutputStream bout = new ByteArrayOutputStream(10000); |
781 |
< |
ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout)); |
782 |
< |
out.writeObject(q); |
783 |
< |
out.close(); |
784 |
< |
|
785 |
< |
ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray()); |
786 |
< |
ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin)); |
787 |
< |
LinkedBlockingQueue r = (LinkedBlockingQueue)in.readObject(); |
788 |
< |
assertEquals(q.size(), r.size()); |
789 |
< |
while (!q.isEmpty()) |
790 |
< |
assertEquals(q.remove(), r.remove()); |
791 |
< |
} |
793 |
> |
Queue x = populatedQueue(SIZE); |
794 |
> |
Queue y = serialClone(x); |
795 |
|
|
796 |
< |
/** |
797 |
< |
* drainTo(null) throws NPE |
798 |
< |
*/ |
799 |
< |
public void testDrainToNull() { |
800 |
< |
LinkedBlockingQueue q = populatedQueue(SIZE); |
801 |
< |
try { |
802 |
< |
q.drainTo(null); |
803 |
< |
shouldThrow(); |
804 |
< |
} catch (NullPointerException success) {} |
802 |
< |
} |
803 |
< |
|
804 |
< |
/** |
805 |
< |
* drainTo(this) throws IAE |
806 |
< |
*/ |
807 |
< |
public void testDrainToSelf() { |
808 |
< |
LinkedBlockingQueue q = populatedQueue(SIZE); |
809 |
< |
try { |
810 |
< |
q.drainTo(q); |
811 |
< |
shouldThrow(); |
812 |
< |
} catch (IllegalArgumentException success) {} |
796 |
> |
assertNotSame(x, y); |
797 |
> |
assertEquals(x.size(), y.size()); |
798 |
> |
assertEquals(x.toString(), y.toString()); |
799 |
> |
assertTrue(Arrays.equals(x.toArray(), y.toArray())); |
800 |
> |
while (!x.isEmpty()) { |
801 |
> |
assertFalse(y.isEmpty()); |
802 |
> |
assertEquals(x.remove(), y.remove()); |
803 |
> |
} |
804 |
> |
assertTrue(y.isEmpty()); |
805 |
|
} |
806 |
|
|
807 |
|
/** |
811 |
|
LinkedBlockingQueue q = populatedQueue(SIZE); |
812 |
|
ArrayList l = new ArrayList(); |
813 |
|
q.drainTo(l); |
814 |
< |
assertEquals(q.size(), 0); |
815 |
< |
assertEquals(l.size(), SIZE); |
814 |
> |
assertEquals(0, q.size()); |
815 |
> |
assertEquals(SIZE, l.size()); |
816 |
|
for (int i = 0; i < SIZE; ++i) |
817 |
|
assertEquals(l.get(i), new Integer(i)); |
818 |
|
q.add(zero); |
822 |
|
assertTrue(q.contains(one)); |
823 |
|
l.clear(); |
824 |
|
q.drainTo(l); |
825 |
< |
assertEquals(q.size(), 0); |
826 |
< |
assertEquals(l.size(), 2); |
825 |
> |
assertEquals(0, q.size()); |
826 |
> |
assertEquals(2, l.size()); |
827 |
|
for (int i = 0; i < 2; ++i) |
828 |
|
assertEquals(l.get(i), new Integer(i)); |
829 |
|
} |
835 |
|
final LinkedBlockingQueue q = populatedQueue(SIZE); |
836 |
|
Thread t = new Thread(new CheckedRunnable() { |
837 |
|
public void realRun() throws InterruptedException { |
838 |
< |
q.put(new Integer(SIZE+1)); |
838 |
> |
q.put(new Integer(SIZE + 1)); |
839 |
|
}}); |
840 |
|
|
841 |
|
t.start(); |
849 |
|
} |
850 |
|
|
851 |
|
/** |
860 |
– |
* drainTo(null, n) throws NPE |
861 |
– |
*/ |
862 |
– |
public void testDrainToNullN() { |
863 |
– |
LinkedBlockingQueue q = populatedQueue(SIZE); |
864 |
– |
try { |
865 |
– |
q.drainTo(null, 0); |
866 |
– |
shouldThrow(); |
867 |
– |
} catch (NullPointerException success) {} |
868 |
– |
} |
869 |
– |
|
870 |
– |
/** |
871 |
– |
* drainTo(this, n) throws IAE |
872 |
– |
*/ |
873 |
– |
public void testDrainToSelfN() { |
874 |
– |
LinkedBlockingQueue q = populatedQueue(SIZE); |
875 |
– |
try { |
876 |
– |
q.drainTo(q, 0); |
877 |
– |
shouldThrow(); |
878 |
– |
} catch (IllegalArgumentException success) {} |
879 |
– |
} |
880 |
– |
|
881 |
– |
/** |
852 |
|
* drainTo(c, n) empties first min(n, size) elements of queue into c |
853 |
|
*/ |
854 |
|
public void testDrainToN() { |
859 |
|
ArrayList l = new ArrayList(); |
860 |
|
q.drainTo(l, i); |
861 |
|
int k = (i < SIZE) ? i : SIZE; |
862 |
< |
assertEquals(l.size(), k); |
863 |
< |
assertEquals(q.size(), SIZE-k); |
862 |
> |
assertEquals(k, l.size()); |
863 |
> |
assertEquals(SIZE - k, q.size()); |
864 |
|
for (int j = 0; j < k; ++j) |
865 |
|
assertEquals(l.get(j), new Integer(j)); |
866 |
< |
while (q.poll() != null) ; |
866 |
> |
do {} while (q.poll() != null); |
867 |
> |
} |
868 |
> |
} |
869 |
> |
|
870 |
> |
/** |
871 |
> |
* remove(null), contains(null) always return false |
872 |
> |
*/ |
873 |
> |
public void testNeverContainsNull() { |
874 |
> |
Collection<?>[] qs = { |
875 |
> |
new LinkedBlockingQueue<Object>(), |
876 |
> |
populatedQueue(2), |
877 |
> |
}; |
878 |
> |
|
879 |
> |
for (Collection<?> q : qs) { |
880 |
> |
assertFalse(q.contains(null)); |
881 |
> |
assertFalse(q.remove(null)); |
882 |
|
} |
883 |
|
} |
884 |
|
|